Who is our Savior?

Titus 2:9-10 NWT

Let slaves be in subjection to their owners in all things, trying to please them, not talking back, not stealing from them, but showing complete trustworthiness, so that in every way they may adorn the teaching of our Savior, God.

Who is our Savior in Titus 2:10?
Titus 2:12-13 NWT

It trains us to reject ungodliness and worldly desires and to live with soundness of mind and righteousness and godly devotion amid this present system of things, while we wait for the happy hope and glorious manifestation of the great God and of our Savior, Jesus Christ,

Who is our Savior in Titus 2:13?