Let what you heard (ēkousate | ἠκούσατε | aor act ind 2 pl) from the beginning abide in you. If what you (ēkousate | ἠκούσατε | aor act ind 2 pl) heard (ēkousate | ἠκούσατε | aor act ind 2 pl) from the beginning abides in you, then you will abide in the Son and in the Father.
Reference
1 John 2:24
Sequence
347