"There are church-attending people who believe that they are saved because they prayed to receive Jesus once, not realizing that the proof of the genuineness of that prayer is perseverance."

when in trouble or great suffering occurs

Rejoice Exceedingly!

We also exult in our tribulations knowing that tribulation brings about perseverance; and perseverance, proven character; and proven character, hope; and hope does not disappoint, because the love of God has been poured out within our hearts through the Holy Spirit who was given to us.

Romans 5:3-5

pursue

A man of God pursues: Righteousness, godliness, faith, love, perseverance and gentleness.

1 Timothy 6:11