Let what you (hymeis | ὑμεῖς | nom pl 2nd) heard from the beginning abide in you (hymin | ὑμῖν | dat pl 2nd). If what you heard from the beginning abides in you (hymin | ὑμῖν | dat pl 2nd), then you (hymeis | ὑμεῖς | nom pl 2nd) will abide in the Son and in the Father.
Reference
1 John 2:24
Sequence
1318