'Holy' in the Bible

This is our [reason for] proud confidence: our conscience testifies that we have conducted ourselves in the world [in general], and especially toward you, with pure motives and godly sincerity, not in human wisdom, but in the grace of God [that is, His gracious lovingkindness that leads people to Christ and spiritual maturity].

Now it is God who establishes and confirms us [in joint fellowship] with you in Christ, and who has anointed us [empowering us with the gifts of the Spirit];

it is He who has also put His seal on us [that is, He has appropriated us and certified us as His] and has given us the [Holy] Spirit in our hearts as a pledge [like a security deposit to guarantee the fulfillment of His promise of eternal life].

He has qualified us [making us sufficient] as ministers of a new covenant [of salvation through Christ], not of the letter [of a written code] but of the Spirit; for the letter [of the Law] kills [by revealing sin and demanding obedience], but the Spirit gives life.

how will the ministry of the Spirit [the new covenant which allows us to be Spirit-filled] fail to be even more glorious and splendid?

Now He who has made us and prepared us for this very purpose is God, who gave us the [Holy] Spirit as a pledge [a guarantee, a down payment on the fulfillment of His promise].

for we walk by faith, not by sight [living our lives in a manner consistent with our confident belief in God’s promises]—

Working together with Him, we strongly urge you not to receive God’s grace in vain [by turning away from sound doctrine and His merciful kindness].

in purity and sincerity, in knowledge and spiritual insight, in patience, in kindness, in the Holy Spirit, in genuine love,

The grace of the Lord Jesus Christ and the love of God, and the fellowship of the Holy Spirit be with you all.