Matthew 25:3-10

for the foolish, taking their lamps, did not take oil with them;

1 Thessalonians 2:9

For ye remember, brethren, our labor and toil; working night and day, that we might not be burdensome to any of you, we preached to you the Gospel of God.

2 Thessalonians 3:7-9

For ye yourselves know that ye should imitate us; because we were not disorderly among you;

Treasury of Scripture Knowledge

Summary

She perceiveth that her merchandise is good: her candle goeth not out by night.

Bible References

Her candle

Matthew 25:3
for the foolish, taking their lamps, did not take oil with them;
1 Thessalonians 2:9
For ye remember, brethren, our labor and toil; working night and day, that we might not be burdensome to any of you, we preached to you the Gospel of God.
2 Thessalonians 3:7
For ye yourselves know that ye should imitate us; because we were not disorderly among you;