Keep thy foot - i. e., Give thy mind to what thou art going to do.
The house of God - It has been said that here an ordinary devout Hebrew writer might have been expected to call it “the house of Yahweh;” but to those who accept this book as the work of Solomon after his fall into idolatry, it will appear a natural sign of the writer’s self-humiliation, an acknowledgment of his unworthiness of the privileges of a son of the covenant, that he avoids the name of the Lord of the covenant (see Ecclesiastes 1:13 note).
Be more ready to hear - Perhaps in the sense that, “to draw near for the purpose of hearing (and obeying) is better than etc.”