How did the National Covenant challenge King Charles I’s religious policies in Scotland?

The National Covenant of 1638 was a direct challenge to the religious policies imposed on Scotland by King Charles I and his advisor, William Laud, the archbishop of Canterbury.1

The Covenant served as a formal rejection of the King’s attempts to force the Church of Scotland to adopt English liturgical practices and church governance, specifically the Book of Canons (1635–36) and the new Liturgy (1637), often referred to as "Laud’s Liturgy". By signing the document, the Scottish Covenanters achieved the following:123

• Reaffirmed Presbyterianism: The Covenant explicitly pledged to maintain Reformed faith and Presbyterian discipline, effectively denouncing the royal innovations.14
• Challenged Royal Arbitrariness: Beyond religious objections, the document signaled opposition to the King’s use of royal prerogative to bypass Scottish precedent and infringe upon private rights.2
• Mobilized National Support: It united diverse groups—from nobility to clergy—against the perceived threat of "popery" and the imposition of Arminian theology, which many associated with Catholicism.23

This resistance led to the Bishops’ Wars, forcing Charles I to call the English Parliament and ultimately triggering a revolutionary situation in both kingdoms.24