4 There are some things, indeed, which, although really asked in His name, that is, in harmony with His character as both Saviour and Master, He does not at the time we ask them, and yet He fails not to do them. For when we pray that the kingdom of God may come, it does not imply that He is not doing what we ask, because we do not begin at once to reign with Him in the everlasting kingdom: for what we ask is delayed, but not denied. Nevertheless, let us not fail in pray ing, for in so doing we are as those that sow the seed; and in due season we shall reap. And even when we are asking aright, let us ask Him at the same time not to do what we ask amiss; for there is reference to this also in the Lord's Prayer, when we say, “Lead us not into temptation.” For surely the temptation is no slight one if your own request be hostile to your cause.
But we must not listen with indifference to the statement that the Lord (to prevent any from thinking that what He promised to do to those that asked, He would do without the Father, after saying, “Whatsoever you shall ask in my name, I will do it”) immediately added, “That the Father may be glorified in the Son: if you shall ask anything in my name, I will do it.” In no respect, therefore, does the Son act without the Father, since He so acts for the very purpose that in Him the Father may be glorified. The Father, therefore, acts in the Son, that the Son may be glorified in the Father: and the Son acts in the Father, that the Father may be glorified in the Son; for the Father and the Son are one.
Source: Tractates on the Gospel of John (New Advent)