When engaging Ahmadis on Social Media, it should be noted that every single argument that they make is contradictory. Nothing makes sense, nothing passes cross examination. In terms of 4:69, MGA never used this ayah to argue that prophethood was continous.
Ahmadi Arguments, from history
It was after the split in the Ahmadiyya movement, roughly 1915 when Mahmud Ahmad took this verse and began using it as an argument for the prophethood of MGA and for more prophets to come (see Reality of Prophethood, 1915 by Mahmud Ahmad).
“It should be borne in mind that a comprehensive knowledge of matters unseen is not granted to those who do not have sound connections with God; and though it is possible for such persons to have the occasional true dream or true vision, but the necessary condition for sainthood (wilayat) and acceptance by God is that unseen matters and hidden affairs should be revealed to the person in much greater abundance than to anyone else in the whole world, so that none can rival this abundance. It is worth remembering that whenever Almighty God, out of His great grace, bestows upon some person the robe and status of sainthood, He grants him clear distinction over his peers and his contemporaries in all of four things. And if such distinction is found in anyone, then it becomes necessary to believe, surely and certainly, that he is one of those perfect servants and exalted saints (auliya) of God whom He has himself chosen and trained under His special guidance.
The four things that mark out the perfect saints (auliya) and men of God are four qualities granted to them to serve as signs and miracles. In each of these qualities they have a clear and plain distinction over others; in fact, these accomplishments reach the grade of miracles. Such a man is like the philosopher’s stone, and only he reaches this rank who has, since eternity, been chosen to benefit the world. The four qualities, which are as four signs or miracles, and which distinguish one who is a great saint (wali) and master and chief of the saints, are as follows.
First quality: receiving revelation
Firstly, matters of the unseen should, after supplication or by other means, be disclosed to him in such abundance, and many prophecies be fulfilled so clearly, that no other person could rival him in respect of abundance of quantity and clarity of condition. And as regards this abundance and clarity, it should be not only improbable, but impossible, that someone else could have a share of these qualities. That is to say, it should be entirely impossible that someone else could parallel or rival these qualities in terms of secrets of the unseen revealed, acceptance of his prayers and prior intimation of the same to him, and signs of support that appear in heaven and earth. And he should, by way of miracle and in an extraordinary manner, be granted such Divine knowledge of the unseen, luminous visions and heavenly support, as if a gigantic river were flowing and a glorious light descending from heaven and spreading on the earth; and these things should reach the stage where they appear to be miraculous and unequalled in their time. This excellence is called the excellence of prophethood.
Second quality: truth
The second excellence that is necessary as a sign for the leader of the saints and chief of the purified ones is the attainment of the higher understanding and knowledge of the Quran. It is necessary to remember that there is a lower, an average and a higher teaching of the Quran. The higher teaching abounds in so much light of knowledge, brightness of truth, true beauty, and virtue, that the lower or average ability cannot possibly reach it. Only the possessors of the purest nature, whose entirely luminous disposition draws light to itself, attain to these truths.
So the first stage of sidq (truthfulness) that they attain is aversion for worldly affairs and an instinctive dislike of what is vain. After this condition is firmly established, the second stage of sidq is reached which can be called zeal, enthusiasm and turning towards God. And after this state is thoroughly established, a third stage of sidq is attained which can be called the greatest transformation, an entire cutting off, personal love, and the rank of total self-effacement in Allah.
This having been deeply-rooted, the spirit of truth penetrates the human being, and all pure truths and matters of knowledge of a high order are revealed to him. There rises up in his heart, and pours forth from his lips, the most profound and deep knowledge of the Quran and points of the Shariah. And such secrets and subtleties of the religion are disclosed to him as are inaccessible to the intellects of the followers of customary and conventional knowledge. This is because he is inspired by God, and the holy spirit speaks within him. All inclinations to falsehood are cut out from within him because he learns from the spirit, speaks according to it, and by the spirit does he influence others.
In this state he is called siddiq (truthful) because the darkness of falsehood entirely leaves him, and is substituted by purity and the light of truth. The manifestation through him, at this stage, of truths and matters of knowledge of a high order is a sign of him. Having been fermented by the light of truth, his holy teaching astonishes the world. People are wonder-struck by his pious knowledge which stems from his self-effacement in Allah and knowledge of the truth. This quality is called the quality of siddiqiyya (lit. truthfulness).
It should be remembered that siddiq is one who both has a complete knowledge of the Divine truths and acts on them perfectly instinctively. For instance, he knows the true significance of matters such as Divine unity, obedience to God, love of God, the obtaining of complete riddance from worshipping others than God; the real meaning of devotion to God, sincerity, repentance; and the essence of moral virtues such as patience, trust in God, resignation to Him, effacement in Him, truthfulness, fidelity, forgiveness, modesty, honesty, trustworthiness, etc. And apart from having this knowledge, he is well-established on all these virtues.
Third quality: being a witness of faith
The third excellence granted to the great saints is the rank of shahadah. By this rank is meant that station where, by the strength of his faith, man acquires such a belief in God and in the Day of Judgment that it is as if he sees God with his own eyes. Then, with the blessing of this conviction, the effort and exertion of doing righteous deeds melts away, every Divinely-ordained fate appears sweet as honey to his heart, and each trial is seen by him as a reward.
Hence shaheed is one who, by the strength of his faith, beholds God, and enjoys like sweet honey the bitter fate ordained by Him. This is why he is called shaheed. This rank is a sign of the perfect believer.
Fourth quality: righteousness
There is also a fourth rank which is attained fully and completely by the perfect saints and the purified ones: the rank of salihin (lit. the righteous). A person is called salih when he becomes inwardly cleared and purified of all wickedness, and with the removal of all this putrid and filthy matter, the ecstasy of Divine worship and contemplation reaches the highest degree. For, just as the taste of the tongue is spoilt by physical illness, so is the sense of spiritual flavour vitiated by spiritual ailments; and a person thus afflicted feels no pleasure in Divine worship and contemplation, nor does he have any enthusiasm, zeal or urge for it. On the other hand, the perfect man is not only cleansed of all evil matter but this quality develops so much within him as to appear as a sign and miracle.
These are, in short, the four grades, to try to attain to which is the duty of every believer. The person who entirely lacks these, lacks faith. This is why in the Sura Fatiha the Glorious God has ordained for the Muslims this very prayer that they implore Him for all these virtues. This prayer is: “Guide us on the right path, the path of those upon whom You have bestowed favours”. This verse has been explained at the other place in the Holy Quran [4:69] where it is made clear that by those upon whom God has bestowed favours are meant the prophets, the siddiq, the shaheed, and the salih. The perfect man has all of these four qualities combined in him.”
— Tiryaq al-Qulub, in Ruhani Khaza’in, vol. 15, pages 417–423.
MGA and his team of ghost writers and scribes seem to have argued that 4:69 only applied to the metaphoric prophets, or the Muhadas’ that were to appear in the Islamic ummah over time. This is the interpretation of the above writing. The reason is, MGA didn’t officially claim prophethood til Nov 1901, and all of his writings pre-1901 seem to argue that prophethood is dead and only metaphoric prophethood is open.
Moreover, Ahmadis have rejected every single Ahmadi that has claimed prophethood since 1908. They dont believe in additional prophets, they believe that their Khilafat is forever, hence, that makes MGA that FINAL PROPHET.
‘A’isha reported: I heard that never a prophet dies until he is given an option to opt the life of (this) world or that of the Hereafter. She further said: I heard Allah’s Messenger (may peace be upon him) say in his last illness in which he’ died. I heard him saying in gruffness of the voice:Along with those persons upon whom Allah bestowed favours from amongst the Messengers, the testifiers of truth, the martyrs, the pious and goodly company are they(iv. 69). (It was on bearing these words) that I thought that he had been given choice (and he opted to live with these pious persons in the Paradise).
(Muslim :: Book 31 : Hadith 5988)
What does 4:69 really imply?
This ayah only means that Muslims will be in the company of prophets and etc in heaven. There are no other meanings here.