Throughout His human life, the Lord Jesus, was perfected for priesthood.

......................................He was able to sympathize because He had been tempted in all points like we are, yet without sin.

....................The awful murmurings of the enemy that He had to endure, taught Him to feel pity for us who are subject to the assaults of Satan.

...............................Hebrews 4:14-16
"14 Seeing then that we have a great high priest, that is passed into the heavens, Jesus the Son of God, let us hold fast our profession.
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.
16 Let us therefore come boldly unto the throne of grace, that we may obtain mercy, and find grace to help in time of need."