John 16:23-25

The prayer that never fails: V. 23. And in that day ye shall ask Me nothing. Verily, verily, I say unto you, Whatsoever ye shall ask the Father in My name, He will give it you. V. 24. Hitherto have ye asked nothing in My name. Ask, and ye shall receive, that your joy may be full. V 25. These things have I spoken unto you in proverbs; but the time cometh when I shall no more speak unto you in proverbs, but I shall show you plainly of the Father.

In that day, with the coming of the revelation through the Spirit, there will no longer be need to ask the Lord any questions. Though the personal intercourse between them and their Master had terminated, they would have the benefit and the certainty of a direct communion through the work of the Spirit. And solemnly Jesus assures them that their relation to the Father will be of a nature permitting them to go directly to Him with all their desires and needs, for their prayers will all be made in the name of Jesus. Because the atonement of Jesus has effected peace with the Father, has restored the believers to their position as children of God, they have but to refer to Jesus and His work, to appeal to His redemption, to be assured of the hearing of their prayers. The work of the Mediator and Savior had not been completed, and therefore the disciples had not prayed in His name. But now the road to the Father's heart has been opened, and they shall entreat, they shall ask, knowing that they will receive, and thus have also the fulfilment of their joy. The efficacy of prayer depends upon faith in the Savior as the Substitute of mankind, by whom we have free access to the Father. In order to bring this truth home to the disciples still more strongly, the Lord frankly tells them that His teaching has been, to a large extent, in proverbial, parabolic sayings. But the hour is coming, after He will have entered into His glory, when He will speak to them without pictures or difficult figures, through the work of the Spirit. Then He will also teach them, announce to them plainly, what is meant by knowing the Father, by having the right understanding of His love and mercy.