In the first sample for Isaiah chapter 61, the Lord makes a connection to the 61st book of the Bible with the day of God’s punishment on the unforgiven.

ISAIAH 61
2 To proclaim the acceptable year of the LORD, and the day of vengeance of our God; to comfort all that mourn;

II PETER 2
9 The Lord knoweth how to deliver the godly out of temptations, and to reserve the unjust unto the day of judgment to be punished:

The Lord used Isaiah 60:2 to connect to I Peter 2:9.
The Lord used Isaiah 61:2 to connect to II Peter 2:9.


In the second sample, the Lord makes a connection with the Holy Spirit giving us the Word of God.

II PETER 1
21 For the prophecy came not in old time by the will of man: but holy men of God spake as they were moved by the Holy Ghost.

ISAIAH 61
1 The Spirit of the Lord God is upon me; because the Lord hath anointed me to preach good tidings unto the meek; he hath sent me to bind up the brokenhearted, to proclaim liberty to the captives, and the opening of the prison to them that are bound;