Titus 1:3

In recent times, however, God had revealed new information to His apostles concerning the hope of eternal life that God had promised long ago. Paul was referring to the gospel. [Note: Knight, p. 285; Towner, The Letters . . ., p. 672.] God had commanded him to pass it on (Acts 26:16-18; cf. 1 Corinthians 9:16), and He has commanded us to do the same (Matthew 28:19-20).

Paul’s reference to God as "our Savior" introduces the thought of salvation, which is a key theme in this epistle (cf. Titus 1:4; Titus 2:10-11; Titus 2:13; Titus 3:4-6). Salvation is a present reality in the life of the church.