Bible Dictionary · F
Faithful
As a designation of Christians, means full of faith, trustful, and not simply trustworthy (Acts 10:45; Acts 16:1; 2 Cor 6:15; Col 1:2; 1 Tim 4:3, 1 Tim 4:12; 1 Tim 5:16; 1 Tim 6:2; Titus 1:6; Eph 1:1; 1 Cor 4:17, etc.).
It is used also of God’s word or covenant as true and to be trusted (Ps 119:86, Ps 119:138; Isa 25:1; 1 Tim 1:15; Rev 21:5; Rev 22:6, etc.).
From Easton’s Bible Dictionary (1897), by Matthew George Easton.