The Lord God Is My Savior

There are several persons, acts, mental states, provisions through whom and by which forgiveness of sin and salvation from damnation is effected. Please analyze the following passages:

Saved by God (1Tim.1:1;4, 10; Jude 25; Titus 1:3-4; 2:10)
Saved by grace (Eph.2:5; 2Tim.1:9; Acts 15:11; Titus 3:4-5)
Saved by Jesus Christ (Mtt.1:21; Jn3:17; 1Tim.1:15; Heb.7:25)
Saved by mercy thro the [...]