'Willfully' in the Bible

Be sober-minded [be sensible, wake up from your spiritual stupor] as you ought, and stop sinning; for some [of you] have no knowledge of God [you are disgracefully ignorant of Him, and ignore His truths]. I say this to your shame.

For if we go on sinning willfully after receiving the knowledge of the truth, there no longer remains a sacrifice for sins,

They willfully ignore this: Long ago the heavens and the earth were brought about from water and through water by the word of God.