I agree with everyone here.
In addition, there is a useful rule of thumb for beginners in Russian.

If the sentence is logically unmarked (no special emphasis), there is a general tendency to put an object after a verb if the object is a noun:
Я вижу дерево. Я слышу музыку. Я не понимаю твоих слов. Я помогаю другу. Я знаю это уравнение.
And there is a tendency to put an object before a verb if the object is a pronoun:
Я его вижу. Я тебя слышу. Я тебя не понимаю. Я ему помогаю. Я это знаю.

Certainly, I am not going to say there is any strict rule about that. There are no strict rules, and the opposite word arrangement is possible and can be used. That is only a hint for a beginner how to construct a phrase with a flat unmarked intonation to sound the most neutral and natural way.