What does this mean 'Vous savez ce que je dis'?

The sentence 'Si vous lisez ceci vous savez ce que je dis' means If you read this you [will] know what I'm saying. In the Word-by-Word translation, the conjunction 'si' means 'if'. The personal pronoun 'vous' means 'you'. The verb 'lisez' means '[you] read'. The demonstrative pronoun 'ceci' means 'this'. The verb 'savez' means '[you] know'. The relative conjunction 'ce que' means 'this which'. And the verb 'dis' means '[you] say, tell'.