LOVE Jude 20-21

But you, dear friends, by building yourselves up in your most holy faith and praying in the Holy Spirit, keep yourselves in God's love as you wait for the mercy of our Lord Jesus Christ to bring you to eternal life.

by building yourselves up in your most holy faith
Colossians 2:6-7 So then, just as you received Christ Jesus as Lord, continue to live your lives in him, rooted and built up in him, strengthened in the faith as you were taught, and overflowing with thankfulness.
1 Thessalonians 5:11 Therefore encourage one another and build each other up, just as in fact you are doing.
Jude 3 Dear friends, although I was very eager to write to you about the salvation we share, I felt compelled to write and urge you to contend for the faith that was once for all entrusted to God's holy people.

and praying in the Holy Spirit
Ephesians 6:18 And pray in the Spirit on all occasions with all kinds of prayers and requests. With this in mind, be alert and always keep on praying for all the Lord's people.
Romans 8:26-27 In the same way the Spirit helps us in our weakness. We do not know what we ought to pray for, but the Spirit himself intercedes for us through wordless groans. And he who searches our hearts knows the mind of the Spirit, because the Spirit intercedes for God's people in accordance with the will of God.

keep yourselves in God's love as you wait
Titus 2:11-13 For the grace of God has appeared that offers salvation to all people. It teaches us to say "No" to ungodliness and worldly passions, and to live self-controlled, upright and godly lives in this present age, while we wait for the blessed hope--the appearing of the glory of our great God and Savior, Jesus Christ, ...
Hebrews 9:28 ... so Christ was sacrificed once to take away the sins of the many; and he will appear a second time, not to bear sin, but to bring salvation to those who are waiting for him.

for the mercy of our Lord Jesus Christ to bring you to eternal life
Matthew 25:46 "Then they will go away to eternal punishment, but the righteous to eternal life."

Scriptures taken from the Holy Bible, New International Version® NIV®, Copyright© 1973, 1978, 1984, 2011 by Biblica, Inc.™ Used by permission. All rights reserved worldwide.