This Bible contradiction is from the Skeptic's Annotated Bible.

Verses

God dwells in darkness.

2 Chronicles 6:1 View context

Then said Solomon, The LORD hath said that he would dwell in the thick darkness.

Psalm 18:11 View context

He made darkness his secret place; his pavilion round about him [were] dark waters [and] thick clouds of the skies.

Psalm 97:2 View context

Clouds and darkness [are] round about him: righteousness and judgment [are] the habitation of his throne.

God dwells in light.

1 Timothy 6:15-16 View context

Which in his times he shall shew, [who is] the blessed and only Potentate, the King of kings, and Lord of lords;

Who only hath immortality, dwelling in the light which no man can approach unto; whom no man hath seen, nor can see: to whom [be] honour and power everlasting. Amen.