The Greek noun aphelotes denotes simplicity, smoothness, or singleness of heart — undivided, uncomplicated, genuine devotion. It appears once in the New Testament (Acts 2:46), describing how the early Jerusalem church broke bread "with glad and sincere (aphelotes) hearts." The word implies wholehearted, unaffected, undivided devotion.
The aphelotes of the early church was not simplicity of intellect but simplicity of motive — no hidden agendas, no performance, no divided loyalties. They ate together simply because they loved God and loved one another. This singleness of heart contrasts with the "double-minded" person warned about in James 1:8. Jesus called the pure in heart blessed (Matthew 5:8) — those whose hearts are single in their devotion. The church's witness is most powerful when it flows from this undivided simplicity.