“If you abide in Me, and My words abide in you, ask whatever you wish, and it will be done for you.” -John 15:7
Of necessity we must be in Christ to live unto Him, and we must abide in Him to be able to claim the largesse of this promise from Him. To abide in Jesus is never to quit Him for another love or another object, but to remain in living, loving, conscious, willing union with Him. The branch is not only ever near the stem but ever receiving life and fruitfulness horn it. All true believers abide in Christ in a sense; but there is a higher meaning, and this we must know before we can gain unlimited power at the throne. “Ask what ye will” is for Enochs who walk with God, for Johns who lie in the Lord’s bosom, for those whose union with Christ leads to constant communion.
The heart must remain in love, the mind must be rooted in faith, the hope must be cemented to the Word, the whole man must be joined unto the Lord, or else it would be dangerous to trust us with power in prayer. The carte blanche can only be given to one whose very life is, “Not I, but Christ liveth in me.” O you who break your fellowship, what power you lose! If you would be mighty in your pleadings, the Lord Himself must abide in you, and you in Him.
[from Faith’s Checkbook by Charles H. Spurgeon]