The word of God
Through your traditions
That you have handed on.
You do many such things
ἀκυροῦντες τὸν λόγον τοῦ Θεοῦ τῇ παραδόσει ὑμῶν ᾗ παρεδώκατε· καὶ παρόμοια τοιαῦτα πολλὰ ποιεῖτε.
There is something similar to this in Matthew, chapter 15:6. Mark said that Jesus pointed out that they have made void or cancelled out the word of God (ἀκυροῦντες τὸν λόγον τοῦ Θεοῦ). Through their traditions (τῇ παραδόσει), they have handed on (ᾗ παρεδώκατε) and done many such things like this (παρόμοια τοιαῦτα πολλὰ ποιεῖτε).