“13. Section 118 [ “ 118. Who may testify .— All persons shall be competent to testify unless the Court considers that they are prevented from understanding the questions put to them, or from giving rational answers to those questions, by tender years, extreme old age, disease, whether of body or mind, or any other cause of the same kind. Explanation.—A lunatic is not incompetent to testify, unless he is prevented by his lunacy from understanding the questions put to him and giving rational answers to them.”] of the Evidence Act, 1872 deals with the competence of a person to testify before the court. Section 4 [ “4. Oaths or affirmations to be made by witnesses, interpreter and jurors .—(1) Oaths or affirmations shall be made by the following persons, namely:(a) all witnesses, that is to say, all persons who may lawfully be examined, or give, or be required to give, evidence by or before any court or person having by law or consent of parties authority to examine such persons or to receive evidence;(b) interpreters of questions put to, and evidence given by, witnesses; and(c) jurors:Provided that where the witness is a child under twelve years of age, and the