Hebrews 4:15

 

For we have not an high priest which cannot be touched with the feeling of our infirmities; but was in all points tempted like as we are, yet without sin [Heb. 4:15].
You will notice in your Bible that the word yet is in italics, meaning that it has been added by the translators. Christ was tempted without sin—tested without sin. In the testing of Jesus in the wilderness, He could not have fallen because He is the God-man. However, the pressure of testing was actually greater upon Him than it would be upon us. He could say, “… the prince of this world cometh, and hath nothing in me” (John 14:30). Satan finds something in me and in you also, but he could find nothing in the Lord Jesus. Let me illustrate this for you: A boat standing in water can only tolerate so much pressure. If the pressure becomes too great, there will be a rip in the hull of the boat and water will come in, and thus the pressure is removed. That is the way you and I are—we give in to the pressure, we yield, and then the pressure is gone. Jesus never did yield, and therefore there was a building up of pressure that you and I never experience. In the same way, the cars of a freight train all have a weight limit which they can carry. If that limit is exceeded, you will have a swaybacked car, one that is bowed down in the middle. It gives in—it can only carry so heavy a load. That is true of all of us. We can carry just so much and not any more. May I say to you, the weight of temptation Jesus Christ could carry was infinite—He was tested without sin. But He was tested, and for that reason He knows how we feel. We have a High Priest who understands us.
I have always felt that for the nation Israel the death of Aaron was in one sense of greater significance than the death of Moses. Aaron was their great high priest. Many Israelites had been brought up with Aaron, had played with him as a boy, and had gone through the wilderness with him. They could go to Aaron and say, “Look, Aaron, I did this, and I should not have done it. I have brought my sacrifice.” And Aaron could sympathize with them. He knew exactly how they felt. But when Aaron died I imagine they wondered whether that new priest, the son of Aaron, would understand. Would he be able to sympathize and to help? We have a Great High Priest who is always available, and He does understand. He does not understand us theoretically, but down here He was tested, and He was “touched with the feeling of our infirmities.” He knew what it was to hunger. He knew what it was to be touched with sorrow—Jesus wept! He was “touched with the feeling of our infirmities … yet without sin.”
McGee, J. Vernon: Thru the Bible Commentary. electronic ed. Nashville : Thomas Nelson, 1997, c1981, S. 5:536-537
 

4:15 all points tempted. See notes on 2:17,18. The writer here adds to his statements in 2:18 that Jesus was sinless. He was able to be tempted (Matt. 4:1–11), but not able to sin (see notes on 7:26).

MacArthur, John Jr: The MacArthur Study Bible. electronic ed. Nashville : Word Pub., 1997, c1997, S. Heb 4:15
 

2:17 propitiation. The word means “to conciliate” or “satisfy.” See note on Rom. 3:25. Christ’s work of propitiation is related to His high-priestly ministry. By His partaking of a human nature, Christ demonstrated His mercy to mankind and His faithfulness to God by satisfying God’s requirement for sin and thus obtaining for His people full forgiveness. Cf. 1 John 2:2; 4:10.

 
7:26–28 Christ’s divine and holy character is yet another proof of the superiority of His priesthood.
MacArthur, John Jr: The MacArthur Study Bible. electronic ed. Nashville : Word Pub., 1997, c1997, S. Heb 7:26