Jude ends here with a doxology. A doxology is an expression of praise and glory to God. It is fitting that this conclusion is given at the end of an epistle that exhorts all to contend for the faith. The false teachers Jude warned about in the epistle were in their doctrine undermining God.
Redemption is possible only through God’s grace. Praise Him. He is able to expunge our sin through the sacrifice of His Son, and we can be reconciled to Him for eternity with such purity.
God is the One who saves us. God is the One who is wise. This is clearly seen in His revealed scheme of redeeming us, formed before our very creation, as indicated in Ephesians 1:3-14.
It is only right and proper that we praise Him. We ascribe to him glory, majesty, dominion and power. We acknowledge that such a preeminent position is well deserved (as our Creator), and as our Savior. It is a position that is eternal, and one we rejoice in. There is no other God, “Both now and forever. Amen”