Here "word of God" refers to anything that God has communicated to humanity, whether through speech or through written messages. Alternate translation: "the words of God are living"
This speaks about God's word as if it were alive. It means when God speaks, it is powerful and effective. (See: [[rc://en/ta/man/translate/figs-personification]])
A two-edged sword can easily cut through a person's flesh. God's word is very effective in showing what is in a person's heart and thoughts. (See: [[rc://en/ta/man/translate/figs-metaphor]])
This continues speaking about God's word as if it were a sword. Here the sword is so sharp that it can cut through and divide parts of the human that are very difficult or even impossible to divide. This means that there is nothing inside us that we can hide from God. (See: [[rc://en/ta/man/translate/figs-metaphor]])
These are two different but closely related nonphysical parts of a human. The "soul" is what causes a person to be alive. The "spirit" is the part of a person that causes him to be able to know and believe in God.
This speaks about God's word as if it were a person who could know something. Alternate translation: "exposes" (See: [[rc://en/ta/man/translate/figs-personification]])
"Heart" here is a metonym for "inner self." Alternate translation: "what a person is thinking and intends to do" (See: [[rc://en/ta/man/translate/figs-metonymy]])