http://breezewiki.pjsfkvpxlinjamtawaksbnnaqs2fc2mtvmozrzckxh7f3kis6yea25ad.onion/minecraft/wiki/Light_Block
In Java Edition , using / give < target > minecraft:light{BlockStateTag:{level:" < int > "}} can give a light block with a specific light level and corresponding texture. If the level is below 0, the non-bulb texture is used, and above 15 the level 15 texture. If the block state is not specified or not between 0 and 15, the light block emits a light level of 15. Usage A light block is intended for use in adventure maps.