Final answer:
The 'wall of separation between church and state' is encapsulated in the Establishment Clause of the First Amendment, which prevents the government from establishing or favoring a state-sponsored religion and upholds the neutrality of religion in public life.
Step-by-step explanation:
The "wall of separation between church and state" is best found in the Establishment Clause of the Constitution. The Establishment Clause, articulated in the First Amendment, dictates that "Congress shall make no law respecting an establishment of religion." This clause creates the foundation for the separation of church and state by preventing the government from endorsing, supporting, or establishing a state-sponsored religion.
Consequently, this clause has been interpreted as ensuring that governmental power does not favor any religion or religious beliefs over others, thus maintaining a neutral stance on religion in the public sphere.
Contrarily, the Free Exercise Clause also found in the First Amendment prohibits the government from interfering with individuals' religious practices and beliefs. The coexistence of the Establishment Clause and the Free Exercise Clause serves to secure religious freedoms, endeavoring to maintain a delicate balance between preventing governmental imposition of religion and safeguarding individuals' rights to practice their religion freely.