Colossians 1:2 New English Translation

²to the saints, the faithful^[a] brothers and sisters^[b] in Christ, at Colossae. Grace and peace to you^[c] from God our Father!^[d]

Colossians 1:2 tn Grk “and faithful.” The construction in Greek (as well as Paul’s style) suggests that the saints are identical to the faithful; hence, the καί (kai) is best left untranslated (cf. Eph 1:1). See ExSyn 281-82.
Colossians 1:2 tn Grk “brothers,” but the Greek word may be used for “brothers and sisters” or “fellow Christians” as here (cf. BDAG 18 s.v. ἀδελφός 1, where considerable nonbiblical evidence for the plural ἀδελφοί [adelphoi] meaning “brothers and sisters” is cited).
Colossians 1:2 tn Or “Grace to you and peace.”
Colossians 1:2 tc Most witnesses, including some significant ones (א A C F G I [P] 075 2464 M it bo Hier), read “and the Lord Jesus Christ” at the end of this verse, no doubt to conform the wording to the typical Pauline salutation. However, excellent and early witnesses (B D K L Ψ 33 81 1175 1505 1739 1881 al sa Ambst) lack this phrase. Since the omission is inexplicable as arising from the longer reading (otherwise, these mss would surely have deleted the phrase in the rest of the corpus Paulinum), it is surely authentic.

New English Translation (NET)