He evidently meant that Timothy had received spiritual training from babyhood, not just from childhood.
प्रत्यक्षतः उसका अर्थ था कि तीमुथियुस को आध्यात्मिक प्रशिक्षण बालावस्था से नहीं बल्कि शिशुपन से मिला था ।