Contrary to popular opinions, being filled with the Holy Spirit IS NOT about us receiving a specific amount or “quantity” of the Holy Spirit. Being filled with the Holy Spirit just means that God has chosen and designated His Holy Spirit to be the One who causes us to live a Christ-like lifestyle—God has chosen and designated His Holy Spirit to be the supernaturally influencing factor that causes us to do what we do for Jesus the Christ, like witnessing to others, as well as ministering to others, edifying (building up) others, exhorting (encouraging) others, speaking in tongues, prophesying, performing miracles, and so forth.
The truth about Saul’s, and everyone else’s, conversion is that conversion IS NOT regeneration, which is a sinner’s born from above spiritual rebirth. Then too, conversion IS NOT salvation, which is a sinner’s sins being forgiven so that this believer can be justified, meaning he or she is treated as if he or she has never sinned. Moreover, a sinner’s sins are forgiven so that this believer can receive the Lord’s imputed righteousness, and the indwelling Holy Spirit. Lastly, conversion IS NOT sanctification, which is a believer being filled with the Holy Spirit, being made holy (sanctified), being transformed (changed) into the image of Jesus the Christ, and being glorified.