Titus 3:4

But when the kindness and love of God our Savior appeared,

Titus 2:10-11

and not to steal, but to show that they can be fully trusted, so that in everything they will adorn the doctrine of God our Savior.

Ephesians 2:4-10

But God, who is rich in mercy, because of his great love with which he loved us,

Hebrews 9:26

For then he would have had to suffer repeatedly since the foundation of the world. But now, he has appeared once for all at the end of the ages to put away sin by the sacrifice of himself.

Romans 2:4

Or do you presume upon the riches of his kindness and forbearance and patience? Do you not know that God's kindness is meant to lead you to repentance?

Romans 5:20-21

Law came in, that the trespass might increase. But where sin increased, grace abounded all the more,

1 Timothy 1:1

Paul, an apostle of Christ Jesus by the command of God our Savior and of Christ Jesus our hope,

1 Timothy 2:3

This is good and acceptable in the sight of God our Savior,

1 Timothy 4:10

For to this end we labor and strive, because we have our hope set on the living God, who is the Savior of all men, especially of those who believe.

2 Timothy 1:10

but has now been revealed through the appearing of our Savior Jesus Christ, who has abolished death and brought life and immortality to light through the gospel.

Titus 1:3

and at the proper time manifested in his word through the preaching with which I have been entrusted by the command of God our Savior,

Treasury of Scripture Knowledge

Summary

But after that the kindness and love of God our Saviour toward man appeared,

Bible References

The kindness

Titus 2:11
For the grace of God that brings salvation has appeared to all men,
Romans 5:20
Law came in, that the trespass might increase. But where sin increased, grace abounded all the more,
Ephesians 2:4
But God, who is rich in mercy, because of his great love with which he loved us,

Appeared

Titus 2:11
For the grace of God that brings salvation has appeared to all men,
2 Timothy 1:10
but has now been revealed through the appearing of our Savior Jesus Christ, who has abolished death and brought life and immortality to light through the gospel.
Hebrews 9:26
For then he would have had to suffer repeatedly since the foundation of the world. But now, he has appeared once for all at the end of the ages to put away sin by the sacrifice of himself.

General references

Romans 9:16
So it depends not upon man's will or exertion, but upon God's mercy.
Ephesians 2:9
not as a result of works, so that no one may boast.
1 John 4:19
We love because he first loved us.