7.If you abide in me. Believers often feel that they are starved, and are very far from that rich fatness which is necessary for yielding abundant fruit. For this reason it is expressly added, whatever those who are in Christ may need, there is a remedy provided for their poverty, as soon as they ask it from God. This is a very useful admonition; for the Lord often suffers us to hunger, in order to train us to earnestness in prayer. But if we fly to him, we shall never want what we ask, but, out of his inexhaustible abundance, he will supply us with every thing that we need, (1Co_1:5.)
If my words abide in you. He means that we take root in him by faith; for as soon as we have departed from the doctrine of the Gospel, we seek Christ separately from himself. When he promises that he will grant whatever we wish, he does not give us leave to form wishes according to our own fancy. God would do what was ill fitted to promote our welfare, if he were so indulgent and so ready to yield to us; for we know well that men often indulge in foolish and extravagant desires. But here he limits the wishes of his people to the rule of praying in a right manner, and that rule subjects, to the good pleasure of God, all our affections. This is confirmed by the connection in which the words stand; for he means that his people will or desire not riches, or honors, or any thing of that nature, which the flesh foolishly desires, but the vital sap of the Holy Spirit, Which enables them to bear fruit.