2 Source Proximity:

Children

1 Earliest Christian texts (Lost Sayings Gospel Q, Signs Gospel): possibly 40s CE (~10-20 years after Jesus' death).
2 Paul's letters: 50s CE.
3 Earliest manuscripts: early 2nd century CE.
4 Earliest canonical Gospel (Mark): around 70 CE (~40 years after Jesus' death).
5 Paul's active ministry (spreading Christian teachings): as early as 31 CE (within a few years of Jesus' death).
6 Contrast: Significantly shorter time gap than for Buddha or Moses.