“17 Wherein God, willing more abundantly to shew unto the heirs of promise the immutability of his counsel, confirmed it by an oath: 18 that by two immutable things, in which it was impossible for God to lie, we might have a strong consolation, who have fled for refuge to lay hold upon the hope set before us: 19 which hope we have as an anchor of the soul, both sure and steadfast, and which entereth into that within the veil; 20 whither the forerunner is for us entered, even Jesus, made an high priest for ever after the order of Melchisedec.”
Hebrews 6:17-20 KJV
The Nelson New King James Study Bible explains verses 19 & 20 this way:
“6:19 The believer’s hope in Christ is secure, like an anchor. Furthermore, this anchor is not in sand, but in the very presence of the Almighty. Behind the veil refers to the Most Holy Place, the place where God dwells.
6:20 The Greek word for forerunner was used in the second century A.D. of the smaller boats sent into the harbor by larger ships unable to enter due to the buffeting of the weather. These smaller boats carried the anchor through the breakers inside the harbor and dropped it there, securing the larger ship. Forerunner presupposes that others will follow. Thus, Jesus is not only the believer’s anchor but He is like a runner boat that has taken our anchor into port and secured it there. There is thus no doubt as to whether this vessel is going into port. The only question is whether it will go in with the sleekness of a well-trimmed sailing vessel or like a water-laden barge. Believers who have such a hope in the presence of God should come boldly before the throne of grace (see 4:14-16).” *