And when they heard it, they glorified the Lord, and said unto him, Thou seest, brother, how many thousands of Jews there are which believe; and they are all zealous of the law:

ACTS 21:20KJV
Know the Bible

What does Acts 21:20 mean?

Acts 21:20 describes how, after hearing Paul's report about his ministry among the Gentiles, the Jewish believers in Jerusalem praised God and pointed out to Paul that thousands of Jewish people had also come to believe in Jesus, yet they remained very devoted to following the Jewish law. The verse highlights both the growth of the early church among Jews and the ongoing importance of the law to these believers.

The setting is a meeting between Paul and the leaders of the Jerusalem church, including James. Paul has just returned from his missionary journeys and is sharing what God has done among non-Jews. The leaders respond with gratitude to God but also draw Paul's attention to the large number of Jewish Christians who are still passionate about keeping the traditional Mosaic law, setting up the tension that follows in the chapter.

The Greek behind Acts 21:20

  • "Zealous" (ζηλωταί, zēlōtai): This word means being deeply committed or enthusiastic, especially about religious matters. Here, it stresses that these Jewish believers are not just casually observing the law but are passionate about it.
  • "Thousands" (μυριάδες, myriades): The Greek word used here can literally mean "tens of thousands," suggesting a very large number, which emphasizes the significant growth of Jewish believers in Jerusalem.
  • "Law" (νόμος, nomos): This refers specifically to the Jewish law, the Torah, showing that these believers still see value and identity in keeping their ancestral customs even as followers of Jesus.

Why Acts 21:20 matters

  • Acts 21:20 clarifies that many early Christians in Jerusalem were Jewish and continued to observe the law, which helps explain later tensions between Jewish and Gentile believers.
  • The verse shows that the leaders of the Jerusalem church were grateful for Paul's work but also mindful of the sensitivities of their own community, which sets the stage for the advice they give Paul in the next verses.
  • This moment highlights the diversity within the early church and the challenges of uniting believers from different backgrounds and traditions.

Where else these words appear

“zealous” Greek G2207 · used in 5 verses

  • Acts 22:3 I am verily a man which am a Jew, born in Tarsus, a city in Cilicia, yet brought up in this city at the feet of Gamaliel, and taught according to the perfect manner of the law of the fathers, and was zealous toward God, as ye all are this day.
  • 1 Corinthians 14:12 Even so ye, forasmuch as ye are zealous of spiritual gifts, seek that ye may excel to the edifying of the church.
  • Galatians 1:14 And profited in the Jews' religion above many my equals in mine own nation, being more exceedingly zealous of the traditions of my fathers.

“thousands” Greek G3461 · used in 7 verses

  • Luke 12:1 In the mean time, when there were gathered together an innumerable multitude of people, insomuch that they trode one upon another, he began to say unto his disciples first of all, Beware ye of the leaven of the Pharisees, which is hypocrisy.
  • Hebrews 12:22 But ye are come unto mount Sion, and unto the city of the living God, the heavenly Jerusalem, and to an innumerable company of angels,
  • Revelation 5:11 And I beheld, and I heard the voice of many angels round about the throne and the beasts and the elders: and the number of them was ten thousand times ten thousand, and thousands of thousands;

“many” Greek G4214 · used in 27 verses

  • Matthew 6:23 But if thine eye be evil, thy whole body shall be full of darkness. If therefore the light that is in thee be darkness, how great is that darkness!
  • Mark 6:38 He saith unto them, How many loaves have ye? go and see. And when they knew, they say, Five, and two fishes.
  • Luke 15:17 And when he came to himself, he said, How many hired servants of my father's have bread enough and to spare, and I perish with hunger!

“are” Greek G5225 · used in 47 verses

  • Luke 7:25 But what went ye out for to see? A man clothed in soft raiment? Behold, they which are gorgeously apparelled, and live delicately, are in kings' courts.
  • Acts 10:12 Wherein were all manner of fourfooted beasts of the earth, and wild beasts, and creeping things, and fowls of the air.
  • Acts 28:18 Who, when they had examined me, would have let me go, because there was no cause of death in me.