Hi Barry,
Most likely the problem is a weak igniter.
You can learn how the oven igniter works from one of our previous posts:
Oven won't lite?
If you want to be certain then you have to measure the current drawn by the igniter. It should be more than 3.2 amps.
- The part number for the oven igniter is
AP2020569
Here are the break down diagrams for the GE range
Model JGBS23BEA2AD
Gene.