Isaiah 35:8:And an HIGHWAY shall be there, and a WAY, and it shall be called The WAY OF HOLINESS; the unclean shall not pass over it; but it shall be for those: the wayfaring men, though fools, shall not err therein.(Emphasis mine)

John 14:6:Jesus saith unto him, I am the WAY, the truth, and the life: no man cometh unto the Father, but by me.

From the two biblical passages, it is clear that JESUS CHRIST is the WAY OF HOLINESS

If you want to live a holy life,you can only do so by walking in HIM.

Remember that JESUS CHRIST is the fulfillment of the laws and the prophets.

Everything that is written in the old testament has been fulfilled in JESUS CHRIST.

Therefore the HIGHWAY,the WAY OF HOLINESS,the WAY is actually JESUS CHRIST as HE HIMSELF also confirmed that HE is the WAY,the truth and the life.