the elder women as mothers; the younger as sisters, in all purity.
We should regard the younger women as sisters in the Lord and treat them with the purity one would grant his physical sister. Perhaps because it is a temptation for some pastors to love their spiritual sisters too much Paul added "with all purity" (1 Timothy 5:2). If a pastor determines to relate to the younger women in his congregation as sisters, he will not do anything to or with them that would harm them in any way.