To exist, to be. Eînai. "I AM" is the name God chose for himself, the ground of all existence. Every created thing exists only because he is.

Teacher of the law, Rabbi. Nomodidaskalos. These were the recognized experts in Moses, yet some opposed the very Word they taught. Knowledge of Scripture is not the same as submission to it.

Perceive, understand, comprehend. Noiéō. Those with ears to hear, let them understand. Spiritual perception is not self-generated. Ask God to open your mind.

Neither, not even, not yet. Not by might nor by power but by My Spirit says the LORD. Human effort alone will never accomplish God's purposes.

Who, which, that, the one who. He who began a good work in you will carry it on to completion until the day of Christ Jesus. God finishes what He starts.

To say, to speak with authority. Jesus said and it was so. When Jesus speaks everything listens. His words carry the weight of creation behind them.

properly, through (all over), i.e. around; figuratively with respect to; used in various applications, of place, cause or time (with the genitive case denoting the subject or occasion or superlative point; with the accusative case the locality, circuit, matter, circumstance or general period)

Speak confidently, insist firmly. Diabebaióomai. Paul urges Timothy to ensure sound doctrine is taught with conviction. What you know to be true, say so without wavering.