They have the appearance of something unknown, though it is not unknown to God. The Word, when He came, did the same, so that the saying might be fulfilled: "My Father has been working until now, and I am working" (Jn 5:17).
"Where have you laid Lazarus?" He asked, when He was near the place of Lazarus' burial. Yet before arriving at the place, and without hearing from anyone about Lazarus, He said to His disciples, "Our friend Lazarus has fallen asleep" (Jn 11:11).
Then was it possible that, while so far away from Lazarus' dwelling during the journey, the Savior knew he had died, yet did not know when He was present at the very place?
By no means. But He wished to show that, while He was doing all this, no one yet believed in Him perfectly. Thus He revealed the great love for mankind shown in His condescension toward us.
Lazarus' sisters ought not to have said, "He has been dead four days; already he stinks" (Jn 11:39). Nor ought they to have come and shown Him.
They should have said, "Thou knowest all things, and if Thou willest, he will live." Therefore He wept over the stoniness of men's hearts.
Thus He asked not in ignorance, but testing them, He reproves and shows love for mankind.
Again He says, "Who touched Me?" not because He did not know who had touched Him. Rather, it was so that the miracle that had occurred might not be proclaimed by the disciples themselves.
The woman who heard this question was to come and speak of the grace bestowed upon her. Having confessed it, she was to hear, "Your faith has saved you" (Lk 8:48).
Thus she would turn others to faith, so that they also might be healed.
"Who," He says, "do men say that I, the Son of Man, am?" So also in the Old Testament it is said in the person of the Father, "Adam, where are you?" (Gen 3:9).
God knew where he was. Therefore He also reproves him, saying, "Have you eaten of the tree?" (Gen 3:11).
And to Cain He says, "Where is Abel your brother?" (Gen 4:9). He did not ask this in ignorance.
For He says, "Cursed are you from the earth, which opened its mouth to receive your brother's blood from your hand. Behold, his blood cries out to Me" (Gen 4:10-11).
Therefore the One who said that the blood cried out was not ignorant. He asked in order to give Cain room for repentance and self-defense.
But again, through ignorance, they turn to love of dispute and say that all these words found in the Old Testament are the words of the Son Himself.
Yet their wickedness is immediately exposed. For the One who said to Moses, "What is this in your hand?" (Ex 4:2), also says, "I am He who is" (Ex 3:14).
And the Lord says to the Sadducees, reasoning about the resurrection: "Concerning the dead, that they rise, God said, 'I am the God of Abraham, the God of Isaac, and the God of Jacob.' He is not the God of the dead, but of the living" (Mk 12:26-27).
In many further ways one can show that what is said in the Old Testament is spoken in the person of the Father.
But it is also often spoken in the person of the Son, and again in the person of the Holy Spirit.