The Greek ordinal dekatos means 'tenth.' In the New Testament it appears in the context of the first disciples following Jesus — John 1:39 notes they came and stayed with Him from 'the tenth hour' — and in apocalyptic imagery in Revelation.
The 'tenth hour' (approximately 4 PM) when the first disciples spent time with Jesus becomes a quietly significant detail: it was the end of the working day, yet they stayed. This spontaneous extended visit inaugurated a discipleship that would reshape the world. The 'tenth' in Revelation's cosmic judgment (Revelation 11:13) reflects the biblical pattern of ten as a number of completeness and accountability — the full measure of time giving way to divine reckoning.