God poured out His Holy Spirit on believers richly. He did this first at Pentecost ( Acts 2), but He does it since then whenever individuals experience conversion (cf. Romans 5:5). His grace always exceeds our need. God has not only graciously declared us righteous, but He has also graciously made us the heirs of eternal life. Paul"s whole emphasis was on the grace of God. We owe everything to God"s grace. [source][source][source]
In Titus 3:5-7 Paul explained what God did (saved, washing, regeneration, renewing, justified), its basis (God"s mercy), its means (the Holy Spirit), and its goal (hope of eternal life). [source][source][source]