First we must remember that Jesus was fully Human, so He must have experienced temptation, and experienced it to the same extent that we do.
Jesus, as the new Adam also had to be a man, if he was not He would not have been able to understand the strength of temptation, and would not therefore be able to help us with it.
Heb 4:14-16
Heb 4:14 Therefore, since we have a great high priest o who has gone through the heavens, 22 p Jesus the Son of God, q let us hold firmly to the faith we profess. r
Heb 4:15 For we do not have a high priest s who is unable to sympathize with our weaknesses, but we have one who has been tempted in every way, just as we are t —yet was without sin. u
2Co 5:20-21
2Co 5:20 We are therefore Christ’s ambassadors, s as though God were making his appeal through us. t We implore you on Christ’s behalf: Be reconciled to God. u
2Co 5:21 God made him who had no sin v to be sin 6 for us, so that in him we might become the righteousness of God. w